1 files changed, 92 insertions, 0 deletions
diff --git a/pcp/pcpparseymd.c b/pcp/pcpparseymd.c
new file mode 100644
index 0000000..9e42077
--- /dev/null
+++ b/pcp/pcpparseymd.c
@@ -0,0 +1,92 @@
+/*
+** Copyright 2001 Double Precision, Inc.  See COPYING for
+** distribution information.
+*/
+
+
+#include "config.h"
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+#include <errno.h>
+#include <signal.h>
+#include <fcntl.h>
+#include <unistd.h>
+#include <time.h>
+#include <sys/stat.h>
+#include "pcp.h"
+
+/*
+** Map yyyymmdd into time_t by reverse-engineering mktime().
+*/
+
+static time_t sod(struct tm *tmptr, unsigned y, unsigned m, unsigned d)
+{
+	struct tm mytm;
+	time_t tt;
+
+	/* Ok, first try */
+
+	mytm= *tmptr;
+	mytm.tm_year=y-1900;
+	mytm.tm_mon=m-1;
+	mytm.tm_mday=d;
+	mytm.tm_hour=0;
+	mytm.tm_min=0;
+	mytm.tm_sec=0;
+
+	tt=mktime(&mytm);
+
+	if (tt == (time_t)-1 ||
+	    (tmptr=localtime(&tt)) == NULL)
+		return (0);
+
+	/* Do it one more time, due to timezone changes. */
+
+	mytm= *tmptr;
+	mytm.tm_year=y-1900;
+	mytm.tm_mon=m-1;
+	mytm.tm_mday=d;
+	mytm.tm_hour=0;
+	mytm.tm_min=0;
+	mytm.tm_sec=0;
+
+	tt=mktime(&mytm);
+
+	if (tt == (time_t)-1)
+		return (0);
+	return (tt);
+}
+
+int pcp_parse_ymd(unsigned y, unsigned m, unsigned d, time_t *s, time_t *e)
+{
+	time_t tt;
+	struct tm *tmptr;
+
+	time(&tt);
+
+	tmptr=localtime(&tt);
+
+	if (!tmptr)
+		return (-1);
+
+	if ((tt=sod(tmptr, y, m, d)) == 0)
+		return (-1);
+
+	*s=tt;
+
+	tt += 36 * 60 * 60;
+
+	tmptr=localtime(&tt);
+
+	if (!tmptr)
+		return (-1);
+
+	if ((tt=sod(tmptr, tmptr->tm_year + 1900, tmptr->tm_mon+1,
+		    tmptr->tm_mday)) == 0)
+		return (-1);
+
+	*e=tt;
+	return (0);
+}
+